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research article
White dwarfs as a probe of exceptionally light QCD axions
May 22, 2024
We study the effects of exceptionally light QCD axions on the stellar configuration of white dwarfs. At finite baryon density, the nonderivative coupling of the axion to nucleons displaces the axion from its invacuum minimum, which implies a reduction of the nucleon mass. This dramatically alters the composition of stellar remnants. In particular, the modifications of the mass-radius relationship of white dwarfs allow us to probe large regions of unexplored parameter space without requiring that axions are dark matter.
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Name
PhysRevD.109.095032.pdf
Type
publisher
Access type
openaccess
License Condition
CC BY
Size
1.5 MB
Format
Adobe PDF
Checksum (MD5)
032a526f5e5919deb392f4152c9856ca